Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December signals a shift in temperature, down from a fresh 50°F (10°C) in November to an icy 40.1°F (4.5°C). The average temperature in Attleboro drops to a subzero cold 29.3°F (-1.5°C) during the night in the month of December.Humidity
The average relative humidity in December is 77%.Rainfall
In Attleboro, Massachusetts, in December, during 11.2 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, there are 149.9 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Attleboro, during December, snow falls for 5.1 days and regularly aggregates up to 2.32" (59mm) of snow. In Attleboro, during the entire year, snow falls for 29.8 days and aggregates up to 14.13" (359mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:54 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:24 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December in Attleboro?
What is the month with the shortest days?
What is the average length of the day in December in Attleboro?
When are sunrise and sunset in December?
How many hours of sunshine does Attleboro have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Attleboro, MA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Attleboro, MA
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Attleboro, MA
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Attleboro, MA
- Average humidity in December: 77%
The months with the highest relative humidity are February, June, September and October (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Attleboro, MA
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Attleboro, MA
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Attleboro, MA
- Average snowfall in December: 2.32"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Attleboro, MA
- Average snowfall days in December: 5.1 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Attleboro, MA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Attleboro, MA
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in December
Attleboro, MA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Attleboro, MA
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Attleboro, MA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Attleboro, Massachusetts, USA
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